Diverging Diamond Interchange
Letter: It’s no wonder accidents are down on I-77 overpass
March 10. [Opinion] There is no surprise that accidents are down after the Catawba overpass was “inverted.” The DDI design is known to slow traffic speed and improve safety. However, […]
It may not be popular, but the DDI is safer
By Dave Vieser. There has been a 58 percent reduction in accidents at the Exit 28 interchange in Cornelius since the Diverging Diamond Interchange (DDI) opened in 2014. Our stats […]
